diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2019-04-04 19:43:29 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-07-25 08:01:43 -0400 |
| commit | 016413d967061fc2eb6798a487b3022bef7698a6 (patch) | |
| tree | c3d23c44eb7ed8ea9de1cec43d39634493ec30fd /drivers/media/v4l2-core | |
| parent | 6a76404b13ba7101216967dc447b77cf69e56adf (diff) | |
media: v4l2-async: Get fwnode reference when putting it to the notifier's list
The v4l2_async_notifier_add_fwnode_subdev() did not take a reference of
the added fwnode, relying on the caller to handle that instead, in essence
putting the fwnode to be added if there was an error.
As the reference is eventually released during the notifier cleanup, this
is not intuitive nor logical. Improve this by always getting a reference
when the function succeeds, and the caller releasing the reference when it
does not *itself* need it anymore.
Luckily, perhaps, there were just a handful of callers using the function.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-async.c | 3 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-fwnode.c | 23 |
2 files changed, 8 insertions, 18 deletions
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index 8d307b538f52..7d364c545a40 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -593,10 +593,11 @@ v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier, return ERR_PTR(-ENOMEM); asd->match_type = V4L2_ASYNC_MATCH_FWNODE; - asd->match.fwnode = fwnode; + asd->match.fwnode = fwnode_handle_get(fwnode); ret = v4l2_async_notifier_add_subdev(notifier, asd); if (ret) { + fwnode_handle_put(fwnode); kfree(asd); return ERR_PTR(ret); } diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index 6972c5af25c6..3bd1888787eb 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -775,23 +775,17 @@ static int v4l2_fwnode_reference_parse(struct device *dev, asd = v4l2_async_notifier_add_fwnode_subdev(notifier, args.fwnode, sizeof(*asd)); + fwnode_handle_put(args.fwnode); if (IS_ERR(asd)) { - ret = PTR_ERR(asd); /* not an error if asd already exists */ - if (ret == -EEXIST) { - fwnode_handle_put(args.fwnode); + if (PTR_ERR(asd) == -EEXIST) continue; - } - goto error; + return PTR_ERR(asd); } } return 0; - -error: - fwnode_handle_put(args.fwnode); - return ret; } /* @@ -1081,23 +1075,18 @@ v4l2_fwnode_reference_parse_int_props(struct device *dev, asd = v4l2_async_notifier_add_fwnode_subdev(notifier, fwnode, sizeof(*asd)); + fwnode_handle_put(fwnode); if (IS_ERR(asd)) { ret = PTR_ERR(asd); /* not an error if asd already exists */ - if (ret == -EEXIST) { - fwnode_handle_put(fwnode); + if (ret == -EEXIST) continue; - } - goto error; + return PTR_ERR(asd); } } return !fwnode || PTR_ERR(fwnode) == -ENOENT ? 0 : PTR_ERR(fwnode); - -error: - fwnode_handle_put(fwnode); - return ret; } int v4l2_async_notifier_parse_fwnode_sensor_common(struct device *dev, |